JPH0245977B2 - - Google Patents
Info
- Publication number
- JPH0245977B2 JPH0245977B2 JP58039502A JP3950283A JPH0245977B2 JP H0245977 B2 JPH0245977 B2 JP H0245977B2 JP 58039502 A JP58039502 A JP 58039502A JP 3950283 A JP3950283 A JP 3950283A JP H0245977 B2 JPH0245977 B2 JP H0245977B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- sheet
- shrinkable
- gunpowder
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
- B29C61/06—Making preforms having internal stresses, e.g. plastic memory
- B29C61/10—Making preforms having internal stresses, e.g. plastic memory by bending plates or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/38—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses
- B29C63/40—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses using sheet or web-like material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/022—Particular heating or welding methods not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
- B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/49—Internally supporting the, e.g. tubular, article during joining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7394—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset
- B29C66/73941—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset characterised by the materials of both parts being thermosets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 本発明は被覆方法に関する。[Detailed description of the invention] The present invention relates to a coating method.
従来鋼管やケーブルの接続部、端部等を防食、
防水、保護するために、熱収縮性シートを巻き付
け、重ね合せ部に粘着剤層もしくはホツトメルト
接着剤層が設けられた固定用シートで積層し、粘
着剤もしくはホツトメルト接着剤で熱収縮性シー
トを固定し、しかるのち加熱収縮せしめることに
よつて被覆している。 Corrosion protection for conventional steel pipes and cable connections, ends, etc.
For waterproofing and protection, wrap a heat-shrinkable sheet, laminate it with a fixing sheet with an adhesive layer or hot-melt adhesive layer on the overlapping part, and fix the heat-shrinkable sheet with an adhesive or hot-melt adhesive. Then, it is covered by heating and shrinking.
しかしながら上記被覆方法では、熱収縮性フイ
ルムを加熱して収縮せしめるので、収縮の際に粘
着剤層もしくはホツトメルト接着剤層も加熱さ
れ、粘着もしくは接着部にズレが生じ剥離すると
いう欠点があつた。 However, in the above-mentioned coating method, since the heat-shrinkable film is heated to shrink, the pressure-sensitive adhesive layer or hot-melt adhesive layer is also heated during shrinkage, which causes the adhesive or adhesive portion to shift and peel.
本発明は上記欠点に鑑み、熱収縮性フイルムを
加熱して収縮せしめる際に、ズレが生じて剥離す
ることなく被覆する方法を提供せんとしてなされ
たものであつて、その要旨は一方の端部付近に火
薬層が形成された熱収縮性シートを、該火薬層が
該シート重ね合せ部の表になるように被覆対象物
に巻付けるか、もしくは熱収縮性シートを被覆対
象物に巻付け、重ね合せ部の表面に火薬層を形成
し、火薬層を燃焼することにより、重ね合せ部を
接着し、加熱収縮性シートを収縮せしめることを
特徴とする被覆方法に存する。 In view of the above-mentioned drawbacks, the present invention has been made in order to provide a method for covering a heat-shrinkable film without causing displacement and peeling when the film is heated and contracted. Wrapping a heat-shrinkable sheet with a gunpowder layer formed nearby around the object to be coated so that the gunpowder layer is on the front side of the overlapping portion of the sheets, or wrapping a heat-shrinkable sheet around the object to be covered, The present invention resides in a coating method characterized by forming a gunpowder layer on the surfaces of the overlapped parts and burning the gunpowder layer to bond the overlapped parts and shrink the heat-shrinkable sheet.
本発明における熱収縮性シートとしては熱収縮
性を有する任意シートが使用でき、たとえばポリ
エチレン、ポリプロピレン、ポリ塩化ビニル、エ
チレン−酢酸ビニル共重合体、エチレン−エチル
アクリレート共重合体、シリコンゴム、エチレン
−プロピレンゴム等で製されたシートを延伸加工
して加熱収縮性が付与されたシートがあげられ、
該シートは架橋されていると耐熱性が向上するの
で好ましく、特に架橋ポリエチレンシートで製さ
れているのが好ましい。 As the heat-shrinkable sheet in the present invention, any heat-shrinkable sheet can be used, such as polyethylene, polypropylene, polyvinyl chloride, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, silicone rubber, ethylene- Examples include sheets made of propylene rubber, etc., which are given heat-shrinkability by stretching.
It is preferable that the sheet is crosslinked, since this improves heat resistance, and it is particularly preferable that the sheet be made of a crosslinked polyethylene sheet.
又火薬を燃焼することによつて接着する端部付
近をのぞいて熱収縮性シートの一面に被覆対象物
との密着性、防水性、防食性等を向上せしめるた
めに接着剤、粘着剤、防食材料等を積層してもよ
い。 In addition, an adhesive, pressure-sensitive adhesive, anti-corrosion agent, etc. is applied to one side of the heat-shrinkable sheet, except near the edges to be bonded by burning gunpowder, to improve adhesion to the object to be coated, waterproofness, anti-corrosion properties, etc. Materials etc. may be laminated.
上記接着剤としては、たとえばエチレン−酢酸
ビニル共重合体、スチレン−ブタジエン共重合
体、スチレン−イソプレン共重合体、エチレン−
エチルアクリレート共重合体、ポリエチレン等を
主体とするホツトメルト型接着剤があげられ、上
記粘着剤としては天然ゴム、ブチルゴム、クロロ
プレン等を主体とするゴム系粘着剤、アクリル系
粘着剤などがあげられる。 Examples of the adhesive include ethylene-vinyl acetate copolymer, styrene-butadiene copolymer, styrene-isoprene copolymer, and ethylene-vinyl acetate copolymer.
Examples include hot-melt adhesives mainly made of ethyl acrylate copolymer, polyethylene, etc. Examples of the adhesive include rubber-based adhesives mainly made of natural rubber, butyl rubber, chloroprene, etc., and acrylic-based adhesives.
又上記防食材料としては、上記接着剤や粘着剤
にアスフアルトや防錆顔料を添加したもの、ペト
ロラタム等があげられる。 Examples of the above-mentioned anti-corrosion materials include those obtained by adding asphalt or anti-corrosion pigments to the above-mentioned adhesives and pressure-sensitive adhesives, petrolatum, and the like.
本発明における火薬としては、たとえば黒色火
薬、無煙火薬等があげられ、火薬を厚紙等にしみ
込ませて火薬層を形成してもよい。火薬層は熱収
縮性シートの表面に予め形成されていてもよい
し、熱収縮性シートを被覆対象物に巻付け、重ね
合せ部の表面に形成されてもよい。 Examples of the gunpowder in the present invention include black gunpowder, smokeless gunpowder, etc., and the gunpowder layer may be formed by impregnating cardboard or the like with the gunpowder. The explosive layer may be formed in advance on the surface of the heat-shrinkable sheet, or may be formed on the surface of the overlapped portion by wrapping the heat-shrinkable sheet around the object to be covered.
次に図面を参照して本発明を説明する。第１図
は本発明の被覆方法の一例を示す断面図である。
図中１は被覆する鋼管である。２は熱収縮性シー
トであり、一面に感圧性粘着剤層３がシート２の
一端部２１を残して積層されている。又４は鋼板
４１の一面に火薬層４２が積層された積層シート
である。 Next, the present invention will be explained with reference to the drawings. FIG. 1 is a sectional view showing an example of the coating method of the present invention.
In the figure, 1 is a steel pipe to be coated. 2 is a heat-shrinkable sheet, and a pressure-sensitive adhesive layer 3 is laminated on one surface of the sheet 2, leaving one end 21. Further, 4 is a laminated sheet in which an explosive layer 42 is laminated on one side of a steel plate 41.
被覆するには、まず熱収縮性シート２を粘着剤
層３が内側になり、一端部２１が表側になるよう
に鋼管１に巻付け、重ね合せ部に積層シート４を
鋼板４１が熱収縮性シート２に当接するように重
ね合せ、火薬層４２に着火する。着火すると火薬
の燃焼熱によつて積層シート４直下の熱収縮性シ
ート２同志が接着されるので、冷却後積層シート
４を剥離し、熱収縮性シート２全体をバーナー等
によつて加熱し、収縮せしめることによつて被覆
が完了する。 To cover, first wrap the heat-shrinkable sheet 2 around the steel pipe 1 so that the adhesive layer 3 is on the inside and the one end 21 is on the front side, and then apply the laminated sheet 4 to the overlapping part so that the steel plate 41 is heat-shrinkable. The explosive layer 42 is overlapped so as to be in contact with the sheet 2, and the explosive layer 42 is ignited. When ignited, the heat-shrinkable sheets 2 immediately below the laminated sheet 4 are bonded together by the combustion heat of the gunpowder, so after cooling, the laminated sheet 4 is peeled off, and the entire heat-shrinkable sheet 2 is heated with a burner or the like. The coating is completed by shrinking.
又熱収縮性シート２の接着をより確実にするた
めに第２図に示したようなはさみ治具を用いても
よい。図中４３及び４４は蝶番４５で接続された
硬質板状体であり板状体４３の内側に積層シート
４の火薬層４２が当接するように積層されてい
る。このはさみ治具で熱収縮性シート２を接着す
るには、熱収縮性シート２の重ね合せ部を板状体
４３及び４４ではさみ、積層シート４を熱収縮性
シート２に押圧して、着火、燃焼せしめ、接着部
分が冷却後取り除けばよい。 Further, in order to ensure the adhesion of the heat-shrinkable sheet 2, a scissor jig as shown in FIG. 2 may be used. In the figure, numerals 43 and 44 are hard plate-like bodies connected by a hinge 45, and the plate-like body 43 is laminated so that the explosive layer 42 of the laminated sheet 4 is in contact with the inside thereof. To bond the heat-shrinkable sheets 2 with this scissor jig, the overlapping portions of the heat-shrinkable sheets 2 are sandwiched between the plate-like bodies 43 and 44, the laminated sheet 4 is pressed against the heat-shrinkable sheet 2, and the ignition is performed. , burn it, and remove it after the adhesive part has cooled.
本発明の構成は上述の通りであり、火薬を燃焼
することによつて熱収縮性フイルムの重ね合せ部
を接着し、加熱収縮せしめるのであるから、重ね
合せ部は確実かつ強固に接着され加熱により収縮
する際にずれが生じ剥離することがなく、又施工
も重ね合せて着火するだけで良いので容易であ
る。 The structure of the present invention is as described above, and since the overlapping portions of heat-shrinkable films are bonded by burning gunpowder and heat-shrinked, the overlapping portions are reliably and firmly bonded and by heating. There is no possibility of displacement or peeling during shrinkage, and construction is easy as all that is required is to overlap and ignite.
次に本発明を実施例により説明する。 Next, the present invention will be explained by examples.
実施例 １
厚さ1.2mmの架橋ポリエチレン製熱収縮性シー
トの一面に、一端部付近を巾５mm残してブチルゴ
ムを主体とする粘着剤層を積層し、第１図に示し
たように鋼管に巻付けた。次に巾５mm、厚さ0.1
mmの鋼板の一面に厚紙に無煙火薬をしみ込ませた
火薬層が形成された積層シートを、第１図に示し
たように熱収縮性シートの重ね合せ部に重ね合
せ、火薬層に着火し、燃焼直後に積層シート上か
ら鋼鉄製ロールで圧着した。Example 1 An adhesive layer mainly made of butyl rubber was laminated on one side of a heat-shrinkable crosslinked polyethylene sheet with a thickness of 1.2 mm, leaving a width of 5 mm near one end, and the sheet was wrapped around a steel pipe as shown in Figure 1. I attached it. Next, width 5mm, thickness 0.1
A laminated sheet with a gunpowder layer formed by impregnating cardboard with smokeless gunpowder on one side of a steel plate of mm is placed over the overlapping portion of the heat-shrinkable sheet as shown in Figure 1, and the gunpowder layer is ignited. Immediately after combustion, the laminated sheet was pressed with a steel roll.
重ね合せ部が冷却後、プロパンガスバーナーで
熱収縮性シートを加熱したところ重ね合せ部がず
れることなく均一に収縮し、鋼管を被覆すること
ができた。 After the overlapped portion was cooled, the heat-shrinkable sheet was heated with a propane gas burner, and the overlapped portion shrunk uniformly without shifting, making it possible to cover the steel pipe.
実施例 ２
厚さ1.2mmの架橋エチレン−酢酸ビニル共重合
体製熱収縮性シートの一面に、一端部付近を巾５
mm残してエチレン−酢酸ビニル共重合体を主体と
するホツトメルト型接着剤層を積層し、第１図に
示したように鋼管に巻付けた。次に実施例１で使
用した積層シート体を巾10mmの鉄板に固定し第２
図に示したようなはさみ治具を作成し、該はさみ
治具で鋼板が重ね合せ部の表側に当接するように
はさみ、火薬層に着火し燃焼して重ね合せ部を接
着した。Example 2 A cross-linked ethylene-vinyl acetate copolymer heat-shrinkable sheet with a thickness of 1.2 mm was coated with a width of 5 mm near one end.
A hot-melt adhesive layer mainly composed of ethylene-vinyl acetate copolymer was laminated with a remaining thickness of mm, and the layer was wrapped around a steel pipe as shown in FIG. Next, the laminated sheet body used in Example 1 was fixed to a steel plate with a width of 10 mm, and a second
A scissor jig as shown in the figure was prepared, and the steel plates were held in contact with the front side of the overlapped portion using the scissor jig, and the gunpowder layer was ignited and burned to bond the overlapped portion.
はさみ治具が冷却後、はさみ治具を取り除き、
プロパンガスバーナーで熱収縮性シートを加熱し
たところ重ね合せ部がずれることなく均一に収縮
し、鋼管を被覆することができた。 After the scissor jig has cooled, remove the scissor jig.
When the heat-shrinkable sheet was heated with a propane gas burner, the overlapping portions shrunk uniformly without shifting, and the steel pipe could be coated.
第１図は本発明の被覆方法の一例を示す断面図
であり、第２図ははさみ治具の一例を示す側面図
である。
１……鋼管、２……熱収縮性シート、３……感
圧性粘着層、４……積層シート、４１……鋼板、
４２……火薬層。
FIG. 1 is a sectional view showing an example of the coating method of the present invention, and FIG. 2 is a side view showing an example of a scissor jig. 1... Steel pipe, 2... Heat shrinkable sheet, 3... Pressure sensitive adhesive layer, 4... Laminated sheet, 41... Steel plate,
42...Gunpowder layer.
Claims (1)
性シートを、該火薬層が該シート重ね合せ部の表
になるように被覆対象物に巻付けるか、もしくは
熱収縮性シートを被覆対象物に巻付け、重ね合せ
部の表面に火薬層を形成し、火薬層を燃焼するこ
とにより重ね合せ部を接着し、加熱して熱収縮性
シートを収縮せしめることを特徴とする被覆方
法。1. Wrap a heat-shrinkable sheet with a gunpowder layer formed near one end around the object to be coated so that the gunpowder layer is on the front side of the overlapping part of the sheets, or wrap the heat-shrinkable sheet around the object to be covered. A covering method characterized by wrapping the heat-shrinkable sheet around an object, forming a gunpowder layer on the surface of the overlapped part, bonding the overlapped part by burning the gunpowder layer, and shrinking the heat-shrinkable sheet by heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58039502A JPS59164113A (en) | 1983-03-09 | 1983-03-09 | Coating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58039502A JPS59164113A (en) | 1983-03-09 | 1983-03-09 | Coating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59164113A JPS59164113A (en) | 1984-09-17 |
| JPH0245977B2 true JPH0245977B2 (en) | 1990-10-12 |
Family
ID=12554817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58039502A Granted JPS59164113A (en) | 1983-03-09 | 1983-03-09 | Coating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59164113A (en) |
-
1983
- 1983-03-09 JP JP58039502A patent/JPS59164113A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59164113A (en) | 1984-09-17 |
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